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    • 162. 发明公开
    • Projection optical system, and exposure apparatus and exposure method
    • Optisches Projektionssystem,und Belichtungsvorrichtung und Belichtungsverfahren
    • EP2722703A2
    • 2014-04-23
    • EP13185918.3
    • 2004-05-06
    • Nikon Corporation
    • Omura, Yasuhiro
    • G02B17/08H01L21/027
    • G03B27/522G02B17/08G02B17/0812G02B17/0828G02B17/0844G02B17/0892G03F7/70225G03F7/70341
    • A catadioptric projection optical system for forming a reduced image of a first surface (R) on a second surface (W) is a relatively compact projection optical system having excellent imaging performance as well corrected for various aberrations, such as chromatic aberration and curvature of field, and being capable of securing a large effective image-side numerical aperture while suitably suppressing reflection loss on optical surfaces. The projection optical system comprises at least two reflecting mirrors (CM1, CM2), and a boundary lens (Lb) whose surface on the first surface side has a positive refracting power, and an optical path between the boundary lens and the second surface is filled with a medium (Lm) having a refractive index larger than 1.1. Every transmitting member and every reflecting member with a refracting power forming the projection optical system are arranged along a single optical axis (AX) and the projection optical system has an effective imaging area of a predetermined shape not including the optical axis.
    • 用于在第二表面(W)上形成第一表面(R)的缩小图像的反射折射投射光学系统是具有优异成像性能的相对紧凑的投影光学系统,并且还针对各种像差(诸如色差和曲率)进行校正 并且能够确保大的有效的图像侧数值孔径,同时适当地抑制光学表面上的反射损失。 投影光学系统包括至少两个反射镜(CM1,CM2)和第一表面侧的表面具有正折射力的边界透镜(Lb),并且填充了边界透镜和第二表面之间的光路 具有折射率大于1.1的介质(Lm)。 每个发射构件和具有形成投影光学系统的折射能力的每个反射构件沿着单个光轴(AX)布置,并且投影光学系统具有不包括光轴的预定形状的有效成像区域。